ISRO successfully launches its heaviest rocket GSLV Mk-III
Technology & Science

Geosynchronous Satellite Launch Vehicle Mk III

ISRO successfully launches its heaviest rocket GSLV Mk-IIIThe GSLV-III or Geosynchronous Satellite Launch Vehicle Mark III is a launch vehicle developed by the Indian Space Research Organisation. It is intended to launch satellites into geostationary orbit and as a launcher for an Indian crew vehicle. The GSLV MK-3 will feature an Indian cryogenic third stage and a higher payload capacity than the current GSLV.

 Development for the GSLV Mk III began in the early 2000s, with the first launch planned for 2009-2010. Several factors have delayed the program, including the 15 April 2010 failure of the ISRO-developed cryogenic upper stage on the GSLV Mk II.

 A suborbital flight test of the GSLV Mk3 launcher, with a passive cryogenic third stage, was successfully carried out on 18 December 2014, and was used to test a crew module on a suborbital trajectory. The first orbital flight is planned to take place in 2016. The first flight with a crew on board would take place after 2020.

Function              Medium lift launch vehicle

Manufacturer    Indian Space Research Organisation

Country of origin              India


Height   43.43 m (142.5 ft)

Diameter             4.0 m (13.1 ft)

Mass     630,580 kg (1,390,190 lb)

Stages   3


Payload to

LEO        10,000 kg (22,000 lb)

Payload to

GTO       4,000 kg (8,800 lb)-5,000 kg (11,000 lb)[2]

Launch history

Status   Launch Rehearsal

Launch sites       Satish Dhawan Space Centre SLP, Andhra Pradesh, India

Total launches   1 (2 stage version)

Successes            1 (2 stage version)

First flight            18 December 2014 (2 stage version; sub-orbital flight)

2016 (full version)

Booster Stage – S-200

Length 25.75 m (84.5 ft)

Diameter             3.2 m (10 ft)

Empty mass        31,000 kg (68,000 lb)

Gross mass         238,000 kg (525,000 lb)

Engines                2 Solid

Thrust   5,150 kN (525 tf) each

Specific impulse                227 (sea level)

274.5 (vacuum)

Burn time            130 sec

Fuel       Solid

Core Stage – L-110

Length 17 m (56 ft)

Diameter             4 m (13 ft)

Engines                2 Vikas

Thrust   1,400 kN (140 tf)

Specific impulse                281 sec

Burn time            200 sec

Fuel       UH 25/N2O4

Upper Stage – C-25

Engines                1 CE-20

Thrust   200 kN (20 tf)

Specific impulse                450 sec

Burn time            580 sec

Fuel       LOX/LH2

Leave a Reply